Enjoy the sun's rays on Tuesday when the temperature is expected to hit 32 in Melbourne, for Wednesday dawn will brew a storm.

Hardly Shakespeare, but that's what the Bureau of Meteorology is predicting for the coming days.

Senior meteorologist Phil King said Melbourne's warm weather on Monday would bring an uncomfortable night's sleep for many, with 20 degrees predicted as the overnight low.

But come dawn on Wednesday, Queensland's tropical storm is expected to roll through Melbourne from the north-west, which could bring 20mm of rain to some metropolitan areas, Mr King said.

Advertisement

"We are all desperate for rain," Mr King said.

"We practically all want to see it across Victoria and in Melbourne where the gardens need a bit too," he said.

State Control Centre senior meteorologist James Taylor said the rain would be welcome and may bring 20 mm-plus to some country areas, but he said winds could have the reverse effect, with up to 40km/h predicted first in a north-to-north-westerly direction, followed by south-westerly winds.

"With the winds around the front there could be a negative on the fires, but on the positive side we are expecting reason rains which should help," Mr Taylor said.

He said the rain was expected to start to come through the Mallee, in the north-west on Tuesday afternoon and south in the evening.

While the end of summer permeates into autumn, Mr King said this may not be the last of Melbourne's string of days over 30.

"Sunday and Monday are predicted to be 29 and 30 ... it's quite possible we will get two days over 30," he said.